Engstrom



April 7, 1953 l. ENGsTRoM 2,634,056

ADDING MACHINE Qriginal Filed March 3l, 1949 .7 Sheets-Sheet 2 IVAN ENGSTROM vsceAssn DOROTHY ENGSTROM ADMINISTRA-rmx BY ATTORNEY April 7, 1953 l. ENGsTRoM 2,634,056-

ADDING MACHINE Original Filed MaIOh 3l, 1949 7 Sheets-Sheet 5 .58 INVENTOR 5I IVAN ENGSTROM neczAszn DOROTHY ENG STROM ADMLNlsTRATR/x 1 BY JHM 65u,

ATTORNEY April 7, 1953 l. ENGsTRoM 2,634,056

ADDING MACHINE A original Filed March 51, 1949 7 sheets-sheet 4 2l INVENTOR 6 IVAN ENGSTRoM nicmar:

ooRoTH Y s NsTRor Anm mlsfRATlmx ATTORNLY l. ENGSTROM ADDING MACHINE April 7, 1953 7 Sheets-Shea?I 5 Original Filed March 31, 1949 l um m /NVE N To R WAN E NGSTROMDEGEASED DOROTHY ENGSTROM ADMNJSTRATRIX mwa @a B ATTORNEY April 7, 1953 l. ENGsTRoM 2,634,056

ADDING MACHINE Original Filed March 31, 1949 7 Sheets-Sheet 6 INVENTO R IVA N ENGSTROM nEcEAsEn DoRoTHY ENGSTRoM AoM/msTRATRjx ATTORNEY l. ENGSTROM ADDING MACHINE 7 Sheets-Sheet 7 Original Filed March 51, 1949 INVENTOR IVAN ENGSTROM DECEASED DOROTHY ENGSTROM AOMINITRATRIX BY man? 6,

ATTORNEY Patented Apr. 7, 1953 UNITED SIAThS ,Ar-sur oF-Flcs ADDING MACHINE Ivan Engstrom, deceased, late ofChi'cago, Ill.,.,by

Dorothy Engstrom, administratrix, Chicago, Ill.

l0 Claims.

It is an object offthe invention to produce an adding machine including a keyboard for setting up in ordered arrangement numerical items to besummated, and mechanism for transferring said items. successively Y to totalizing devices affording a visual indication `of the sum or total of saiditemsr and by the same operation clearing thekeyboard of each set-up item and restoring said, keyboard` to its initial or zero condition by each said transfer, and including also means for clearing said totalizing devices and restoring them toinitial, or Zero condition at the will of the operator aftereach complete totalizing operation has. served its purpose, and eiecting all of said operationsby novel mechanism and. with a degreeY of accuracyand reliability not attainable withvheretofore proposed adding machines for reasons below setforth.

The machine ofthe inventionrhas a keyboard of. theisector type,l ordered and angularly movablesectorsbeing,employed `in the set-up mechanism, ,said sectors havingk radially extending fingers which together with stationary digit indicatorsconstitute the keyboardof the machine, a spring, detent being provided. for each sector to` yielding-ly hold it in anyset-up position to which it may be moved.v The machine employs ordered totalizer wheels axially alignedand carrying `printed or .embossed numerical gures readable-through a sight .opening orl openings in P they machine casing to givean indication of the totalvamount of operation. ofthe totalizer wheels; said totalizer wheels are respectively provided with attached ratchetl wheels of. novel constructionA below described, which ratchet. Wheels ref spectively .include sidewalls, each having formed therein or ltherethrough equally spaced clutch openings4 in a circular arrangement coaxial with theratchet wheel, which openings are the same in numberias the `number of indicating iigures or numerals on the corresponding totalizer Wheel.

Eachr of theset-up sectors carries or has formed on. itsedge,V gear. teeth of a segmental gear,y meshing atalltimes with-the teeth of an idler gear, which idlergear hasY its teeth at all times in mesh 'also with the teeth of 4a transfer gear supported for independent rotation onthe Shaft` supporting the totalized wheels. Each 'transfer gear is movable axially'on the shaft supporting it, for yclutching purposes, and. carries a clutch pin in radial alignment with the clutch openings in an adjacent one of the totalizer ratchet 4wheels, each of said transfer gears beingmounted on its "supporting shaft. adjacent cnefofhsaid- -totalizer ratchet wheels andmovable towards and from said ratchet wheel toengage and disengage its clutch pin with an opening or hole in the ratchet wheel determined byf-ithe angular position the corresponding totalizer wheel may then have-on its supporting shaft..V

The machine of the invention is providedwith a handle or crank ior voperation after each keyboard set-upv is effected,A and cam Vdevices operated by said handle eect the operationsvbelow described'.`

it will be noted that operating the set-up iingersto set up a desired item. on the keyboard, serves only to impart-angular movementtothe sectors,.to the idler gearsand to the transfer gears, the iatter'then being in positions entirelyl disengaging their clutch pins from the totalizer ratchet wheels. It is also to be noted that spring detentev are provided for-the totalizer wheels. eachengaging one of said totalizer ratchet Wheels and tending-tothold the corresponding totalizer wheel in itsposition of last operation. The totalizerdetents :and the sector detents are' so related that for any selectedr position ofany sector lin effecting. any keyboard set-up, the clutch pin vof the corresponding `transfer gear is inalignment `with one-of theclutch openings in the adjacent totalizer ratchet wheel.

Thus,` therev being no operatingeonnection of any kind between the sectors and the totalizer wheels during a keyboard set-up operation, Vwhen any said set-up'is being made theoperator may change it in any manner he pleases, without in any way affecting the totalizer wheels,V theln'al set-up amount on the keyboard immediately preceding a transfer operation, being the only amount that can then bei transferred to the totalizer wheels.

The operating handley of themachine when-'at rest is preferably in a back position away from the operator, and a complete'cycle' -of operation of said handle includes a complete forward movement offsaid handle and then a completeback stroke-thereof. n view of it being important to thev successful operation of thel machine that/the forward movement ofthe handle be complete before its .backf movement is begun, and that, once begun, the back movement 'of the handle shall be. complete, a full-stroke mechanism as below described is employed to insure movement ofthe handle through itsV entire cycle of operation, whenever said handle is given any' forward movement from its back position.

After a desired keyboard set-up has been established, movement'vof the'operating' handle from its baclr'positionV as far as the transfer operation is concerned, first, by the cam devices referred to, moves all of the clutch pins so that they enter the openings in the totalizer ratchet wheels with which they are in alignment. This, because of the positive gearing of the sectors to the transfer gears, and because of the positive clutch engagement between the transfer gears and the ratchet wheels rigidly connected with the totalizer wheels, establishes for the time of transfer, a positive and unyielding train of mechanism between each sector and the corresponding totalizer wheel; during the transfer, any and all movement of each sector is accurately reiiected in movement of the corresponding totalizer wheel, and it is impossible for'any totalizer wheel to have any movement not imparted to it by movement of the corresponding sector.

Continued forward movement of the operating handle maintains the positive clutch engagement referred to, and by said cam devices operates a sector returning shaft having radially extending arms rigidly carried thereby which engage studs on the sectors and move the latter back towards their zero positions. The returning movement of each sector begins at a point in the movement of its returning arm determined by the amount of forward movement previously given the sector in establishing the set-up being transferred, and ends when the sector reaches a fixed stop determining its zero position; the returning or back movement of each sector thus eected, advances the totalizer wheel then positively clutched to the corresponding transfer gear which in turn is positively geared to the sector, the same number of units as required to move the sector back to its zero position, or differently stated, the units represented by the set-up of the sector are positively and accurately transferred to the totalizer wheel, there is no possibility of slippage during the transfer movement and the totalizer wheel must advance the same number of units as the units of set-up of the sector, and the totalizer wheel cannot have greater angular movement than the movement given it by resetting the sector to its Zero position, and the possibility of overthrow of the totalizer wheel is avoided, regardless of the rapidity of movement of the operating handle. Adding machines have heretofore commonly employed pawl and ratchet mechanisms for operating their totalizer wheels, and overthrow with such machines has frequently occurred, coupled with inaccurate indications of totals, a result impossible with the present invention.

After the forward movement of the operating handle has reset the sectors to their zero positions, and said totalizer wheels are at rest and under the control of their spring detents, the operating handle has a small remaining amount of forward movement which by said cam devices, moves said transfer gears away from the adjacent totalizer ratchet wheels a suicient distance to move the clutch pins from engagement with said ratchet wheels, thereby freeing said sectors for the next set-up operation.

It is a further object of the invention to reduce the load on the operating handle during the sector resetting operation, as much as possible without sacrificing accuracy of operation and without making the machine unduly complicated. If no devices were employed to prevent it, the load on the handle would necessarily include the lfull resistance of the totalizer spring detents and of the sector spring detents, as well as of the spring employed to hold thehandle in its back position until it is desired to effect a transfer operation. The invention provides means for materially reducing said load on the operating handle as follows. The sector spring detents are all mounted on a common bar which at its ends is pivotally supported by the frame of the machine, so that it may be oscillated to move the sector` engaging portions of the detents towards and from the sectors which are notched at their edges to cooperate with said detents. A toothed disk is mounted for rotation on a xed'part of the machine, for operation by said cam devices. The disk is positioned relatively to a free edge of said mounting bar so that in a first operative position of said disk, the bar edge rests between any two adjacent teeth of said disk, at which time a relatively strong spring or springs connected with said bar press the latter rmly against said disk to in turn press the detents with maximum holding pressure against the sectors; and so that in a second operativeposition of said disk, the bar edge is in engagement `with one of said adjacent teeth of said disk, to move the detents away from the sectors enough to either substantially reduce their sector holding action or to entirely eliminate said holding action, as preferred. At the beginning of each transfer operation, the rotary disk is in its first position and the detents exert their full holding effect on the sectors; when the operating handle has been moved forwardly enough to enter the clutch pins into the clutch openings in the totalizer ratchet wheels, means between said disk and said cam devices of the machine, begin the turning of said disk from its first position to its second position, which movement to its second position is completed at the time the clutching operation is completed and before resetting movement of the sectors is begun, and the disk is held in said second position by said cam devices during the entire sector resetting operation; when the resetting operation has been completed and simultaneously with the operation disengaging the clutch pins from the totalizer ratchet wheels, said cam devices move said disk from its second position to its rst position, thereby restoring the full effect of said sector detents, and placing the sectors in condition for the next setup operation.

It is a further object of the invention to produce a carry-over mechanism for the machine. of the delayed carry-over type, which by a simple, effective and novel construction below described, rst stores any carry-over required by any transfer operation, and then at the end of each back movement of the operating handle, operates the totalizer wheels to accurately and reliably add said carry-over to the total indicated by said totalizer, thereby accurately indicating the total summation of the several set-up items transferred to the totalizer wheels since the last re-setting or clearing thereof.

To effect said carry-over, the invention provides each totalizer wheel excepting the one of lowest order, with a carry-over slide having reciprocatory movement towards and from the associated totalizer wheel and having a springactuated pawl in line with the ratchet wheel attached thereto. Each slide cooperates with two latches, a rst of which is a trigger latch engaging the slide and preventing its carry-over movement unless said latch is actuated by movement of the totalizer wheel of next lower order from its 9 to its 0 position, and the second of which is a timing latch and restrains the slide against carry-over movement when saidY slide is released by said trigger latch, until just before the operating handle reaches the end of its back stroke. The trigger latch is provided with an arm having an end lug extending through an opening in a partition of the machine between said trigger latch and the totalizer wheel of next lower order, which lug extends into the path of la cam carried by the last mentioned totalizer wheel in such a manner that when in any way the latter is rotated from its 9 position of indication to its o position, its cam raises said arm and thus moves the trigger latch enough to free the slide from restraint by said trigger latch, and an operating spring connected with the slide at once moves the latter forwardly towards the totalizer wheel cooperating with said slide, a small amount suihcient to prevent reestablishing holding engagement between saidl trigger latch and said slide when the lug of the latter latch is freed from the totalizer cam of next lower order, which occurs just before the totalizer wheel of next lower order reaches its 0 position; said small amount of forward movement of the slide is not enough to bring the pawl of the slide into engagement with its associated totaliaer ratchet wheel, and is permitted by a corresponding amount of play between the timing latch and the portion of the slide engaged by it, said timing latch for the moment being the only means restraining the slide from forward movement by its actuating spring to advance the associated totalizer wheel one unit; inits position of rest, said lug of the trigger latch rests on the lower edge of the opening in the partition through which it passes, and a second lug carried by said trigger latch lies in therpath of forward movement of the slide and prevents forward movement of any kind under the action of its spring as, long as that relation of parts continues, which is as long as there is no need for a carry-over operation by the slide, and at that time, regardless of the position of the timing latch, the latter exercises no restraint against forward movement of the slide; when the arm of the trigger latch is raised by the totalizer cam of next lower order, the second lug of said latch is raised to entirely clear the slide, which permits instantaneous and entirely unrestrained forward movement of the slide the small amount referred to before such movement is stopped by the timing latch, as a result of which, when the first mentioned lug of said trigger latch is freed from thetotalizer cam, the trigger latch, under the. action of its returning spring, cannot "then return to its position of rest, but, by the engagement of its second lug with an upper longitudinal surface of the slide is held in a somewhat raised position, which condition of the trigger latch continues through the carry-over operation and until the slide is moved to its extreme back position; the timing latch is provided with a spring holding it in its slide restraining position at all times excepting when the operating handle is in its extreme back position, means being provided on the operating shaft secured to said operating handle, by which the timing latch is moved to its slide releasing position during the last part of the back movement of the operating handle, which frees the slide, and the latter is then moved by its actuating spring through the remainder of its possible forward movement, by which its pawl engages the totalizer ratchet wheel and advances the totalizer wheel one unit and effects the necessary carry over. Themeans employed. to move the timing latches of the machine to releasing or inoperative position atthe end portion of the back stroke of the operating handle, also serve to free said timing latches during the first part of the forward movement of each cycle of operation of the operating handle,

and at the same time or immediatelythereafter,

additional means controlled by the operating shaft move any of the slides that may then be in their forward positions as a result of effecting carry-over operations, to their rear positions and into holding engagement with said trigger latches with the timing latches in position to serve their holding purpose above described,I

which operations are completed before the transfer movement of the totalizer wheels above described, is begun by continued forward-movement of the operating handle.

The carry-over operation may involve rst, a single unit of advance for each totalizer wheel of next higher order than a totalizer wheel of lower order moved from its 9 position to or through its "0 position by a transfer operation; or second, a corresponding unit of advance for each of adjacent totalizer wheels of higher order initiated by movement of the totalizer wheel of the order next lower than the lowest of said totalizer wheels, where all of the totalizer wheels of higher order are in their 9 positions before the carry-over operation, in which case the carry-over movement of said totalizer wheels is successive from lower to higher order, each of said totalizer wheels of higher order initiating in turn the carry-over movement of the totalizer Wheel of higher order.

A further object of the invention is to provide the machine with means for resetting the totalizer wheels to their 0 positions when desired, which means includes devices preventing the resetting operation unless all of the carryover slides are in their extreme back or retracted positions away from the totalizer wheels, to protect the carry-over pawls and totalizer ratchet wheels from damage that might occur if the pawls were not fully withdrawn and held so at the time of resetting, which retracted or back positions of the slides may readily be effected if a carry-over operation immediately preceded an attempted resetting operation, by an idle cycle of movement of the operating handle having no effect excepting to retract such of the slides as may then be in their carry-over positions. Said resetting means also includesdevices for stopping the resetting movement of the totalize wheels when they reach their O positions.

It is a further object of the invention to construct the parts of the machine by simple and inexpensive operations, such as punch press and screw-machine operations, and to so construct and relate the parts in the assembled machine,

This is a divisional application of original application Serial No, 84,711 filed in ther United States Patent Oice on the. 31st day of March, 1949, now Patent No. 2,542,403 for an improvement in Adding Machines, the present application being limited to the tens transfer mechanism. described and originally claimed in said original application.kv

The above and other objects of the invention will more fully appear and be better understood by reference to the accompanying drawings illustrating a preferred embodiment of the invention, in which Fig. l is a side elevation of the complete adding machine to a' reduced scale,

Fig. 2 is a front end elevation of the complete adding machine to a reduced scale,

Fig. 3 is a full-size plan View of the machine with the casing removed,

Fig. 4 is a vertical, sectional View of the structureshown in Fig. 3 taken along the line 3 4 in the latter gure,

Fig. 5 is a vertical, sectional view of the structure shown in Fig. 3 taken along the line 5 5 in the latter figure,

Fig. 6 is a view similar to Fig. 5 of a part of the structure therein, with the spring detent supporting bar in its alternate position,

Fig. 7 is a vertical, sectional sectional view of the structure shown in Fig. 3 taken along the line I-l in the latter figure,

Fig. 8 is a horizontal and inclined sectional view of the structure shown in Fig. 'I taken along the line 8--8 in the latter figure,

Fig. 9 is a view similar to Fig. 8 with the clutch members thereof and their operating devices in an alternate position,

Fig. 10 is a view similar to Fig. 8 with its clutch operating cam in its position of backward movement,

Fig. 11 is a vertical, sectional View of a part of the structure shown in Fig. 8 taken along the line Il-ll in the latter iigure, and shows one of the transfer gears in front elevation,

Fig. 12 is an inclined sectional view ofthe gear shown in Fig. 11 taken along the line l-l in the latter gure,

Fig. 13 is a vertical sectional view of a part of the structure shown in Fig. 9 taken along the line |3-l3 in the latter ligure, and shows one of the totalizer ratchet wheels in front elevation,

Fig. 14 is a horizontal, sectional view of a part of the structure shown in Fig. 4 taken along the line Ill- I4 in the latter figure and shows the main operating shafts of the machine,

Fig. 15 is an inclined sectional view of a part of the structure shown in Fig. 4 taken along the line I5-l5 in the latter figure, and shows the clutch operating shaft and the shaft supporting the totalizer wheels and the transfer gears,

Fig. 16 is a vertical, axial, sectional View to an enlarged scale through one of the totalizer wheel assemblies,

Fig. 17 is a rightl hand end elevation of the structure shown in Fig. 16,

Fig. 18 shows in a View similar to Fig. 1'7, a right hand end elevation of the body portion of the totalizer wheel shown in Fig. 16, with the ratchet wheel, hub and internal plate and pawl removed,

Fig. 19 is a right hand end elevation of the wheel hub shown in Fig. 16,

Fig. 20 is a left hand end elevation of the internal plate and pawl shown in Fig. 16,

Fig. 21 is a vertical, sectional view of a part of the structure of Fig. 3 taken along the line 2 l-Ei in the latter gure, and shows the carry-over devices of the machine in side elevation with the carry-over slide in its fully retracted position,

Fig. 22 is a View similar to Fig. 21 and shows the trigger latch in its slide-releasing position, and the slide moved forwardly a small amount and still held by its timing latch,

Fig. 23 is a view similar to Figs. 21 and 22 and shows the timing latch withdrawn from slideholding engagement, and the slide in its carryover position,

Fig. 24 is a Vertical, sectional View of a part of the structure shown in Fig. 3 taken along the line 2li-2 in the latter figure, and shows a portion of the carry-over mechanism illustrated in Fig. 21, with the trigger latch in its position of rest and with the carry-over slide in the position shown in Fig. 2l,

Fig. 25 is a View similar to Fig. 24 and shows the trigger latch in its fully raised position by the totalizer wheel of next lower order, the carryover slide being shown in this View in its position of slight forward movement permitted by the timing latch in its holding position as shown in Fig. 22,

Fig. 26 is a view similar to Figs. 24 and 25 and shows the totalizer wheel of next lower order in its O position releasing the trigger latch, and also shows the carry-over slide in its forward or carry-over position permitted by the releasing position of the timing latch shown in Fig. 23,

Fig. 27 is a vertical, sectional View of a part of the structure shown in Fig. 3 taken along the line 2'5"-21 in the latter figure, and shows the means employed for controlling the resetting of the totalizer wheels,

Fig. 28 is a Vertical, sectional View of a part of the structure shown in Fig. 14 taken along the line Z8-28 in the latter figure,

Fig. 29 is a Vertical, sectional View of a part of the structure shown in Fig. 14 taken along the line 2li-29 in the latter figure,

- Fig. 30 shows in end elevation the inner end of the hub portion of the operating handle removed from the operating shaft shown in Fig. 14,

Fig. 31 shows in right hand end elevation, the full stroke mechanism and hub portion of the operating handle employed in connection with the operating shaft and shown in part in horizontal sectional View and in place on said shaft in Fig. 14,

Fig. 32 is a vertical, sectional view of the structure shown in Fig. 4, taken along the line 32-32 in the latter figure,

Fig. 33 shows in a view similar to Fig. 32, a modied form of clutch mechanism between the transfer gear and the totalizer wheel shown in Fig. 32,

Figs. 34 and 35 are Vertical, sectional views oflarged scale, of a part of the structure shown in Fig. l, taken along the line 371-31 in the latter figure.

Similar numerals refer throughout the several views.

to similar parts rlhe adding machine of the invention includes a framework comprising Vertical, parallel andequally spaced partitions 2 to 8 inclusive (Fig. 3),-

of sheet metal, forming compartments I to VI between them, and vertical end plates l and 9' of sheet metal parallel with and spaced from the adjacent partitions 2 and 8 respectively. Said partitions and end plates extend from front to rear of the machine, and are held together by tie rods lo to I4 inclusive (Figs, 3, 4 and 36) extending through said partitions and end plates and carrying spacing sleeves l5 to I9 of metal be-` .tween said partitions and endplates, by which said partitions and end plates are rigidly and securelyheld together to constitute the framework of the machine, by end screws engaging said tie rods. ,VEachvof the compartments I to VI contains a totalizer wheel 2l! and attached ratchet wheel 2| and atransfer-gear 22, which parts are mounted for `rotary movement on a common supporting shaft 2-3 ,(Eig. 3) extending with .a sliding fit through'the partitions 2-8 inclusive; each of said compartments also contains set-up devices including an oscillatory finger 24 adjacent a curved index lplate 25 kfor setting up each amount to be transferred and added to the total shown by the ftotalizer lwheels2; .said compartments I t0 VI inclusive thus vcorrespond to the orders of units involved V'in the machine, being respectively from `rightto left of the machine, units, tens, hundreds, thousands, tens of thousands and hundreds of thousands, the capacity of the illustrative machine being19,959,999.Vv

Each of the .compartments AIll .to IV inclusive also contains carry-over mechanism of the delayed Yaction type, including an operating slide 2B, a trigger latch 21 and a timing latch 28 (Fig.

-3.).for advancing the totalizer` wheel 2d of that orderlone unit as a result vof the totalizer wheel of the next .lower order being rotated from its 9 toits position. Many of the parts in the severalcompartments are duplicates of each other and are respectively referred to by the same reference, numerals where confusion does not result Yfromso doing; for examplathe finger 24 may if unmodied, `refer to said finger in any of the compartments, Ysince the set-up mechanism in each compartment is the same as in each other compartment. If, however, for clarity, it is necessary to identify such a part in a particular compartment-for example, the nger r24 in compartment Lthat'eifect is securedherein bydesignating said finger as finger Zd-I. Similarly, where the carry- `over .operation in compartment `II is discussed (Figs. 4, 21), the carry-over operation is initiated 'by totaliz'er wheel Bil-I being turned from its 9 fthe. end 'of the operating cycle of the main handle 35.

As 'shown in Figs. l and 2, the machine is provided wth a `casing 2s of suitable material, for

example, sheet metal or plastic, which has a front wall closely adjacent the index plates 25 and ,totalizer wheels 2i?, which wall is provided with a lower sight opening 3S disclosing all of the numerical indications on the index plates 25, provided as an aid in effectingany desired set-up of vthe ngers fifi extending through said opening 3,0.`

As vshown Vin Figs. 2 and 3, each index plate 2.5

Vis provided with a .eight opening .El disclosing ,an indicator, 32 operated.A by thefi'nger 24. and ,carrying digitsshowing'at any' time through said opening if'la 'digit corresponding to the seteijp position of said finger. The lingers 24 and index 10 plates 25 together constitute the keyboard ci' the machine.

Above the sight opening S, the front wall of the casing 29 is provided with individual sight openings 33 extending across the casing `and showing by means of numerals on the outer surfaces of the `totalizer vwheels 2t, the total value of any desiredseries of items or amounts successively transferred to said wheels for corresponding items of set-up, and also showing .after resettingsaid wheels following a desired summation, the O orc'leared condition of said wheels. A resetting knob 34 having va hub extending through a'clearance opening in the casing forconnection with the rod--23, vis provided tov reset the wheels 2t to their 0 condition. A main operating 4handle 35 having a hub 36 extending through a clearance opening in the casing 29 for connection with the main operating shaft of the machine,.is provided to effect after each set-up,` a transfer of said set-up tothe totalizer wheels .213, to .clear the keyboard and restore the fingers 24 to their 0 positions, and to controlthe operation of the carry-over devices. Y

As shown in Fig. .37, the casing29 fits closely around a base 31 tc which it is secured by screws 38 as indicated. Thebase y3'! is enough widerthan the over-all width of the framework youtside of theend plates l vand 9,to support blocks orulugs 39 adjacent said end plates, which blocks are secured to the base by screws 40 as indicated. ,A front retaining rod A! extends with a sliding -t through the blocks 3S and also through holes 42 therefor through the end plates l and 9 and through the partitions 2 to 8 inclusive to connect the framework with the base. A similar rod extends through similar blocks and also through the end plates and partitions to connect the rear portion of the framework with the base.

As shown in Fig. 14, lthe main operating shaft 43 of the machine is supported by end bearings 44 and^45 rigidly secured to the-end plates l and 9. The shaft is of square cross-section excepting at its end portions, and carries arms 46 for in part controlling the carry-over mechanism, and also cams 4l, 48 and 49, which arms and cams have square holes that are a sliding t-on said shaft. Tubular metal spacers 50 i and 5| having a square cross-section and a sliding fit on the shaft hold the arms and cams rigidly in place on the shaft. The spacer 50 is rigidly secured to the shaft by a pin 52 and is of a length from the round end of the shaft in the bearing 15 to hold the cam 47 adjacent but slightly spaced from the outer surface of the partition 8. The spacers El are unsecured yto the shaft and are of lengths holding the cam 48 adjacent and slightly spaced from the right hand side of the partition 5 and holding the cam 49 a small distance to the right from the middle of compartment I; said spacers 5i also hold the arms 46 in similar positions in the compartments II to VI inclusive, each in a position somewhat to the left of the middle of the compartment containing it. ',Ihe shaft 43 extends with square cross-section a substantial distance to the-right'of the cam 49, and said square extension enters anend keyway-53 ina cylindrical connector 54, which keyway has a width closely fitting the opposite flat surfaces of said extension and a depth somewhat greater than theflength of said square extension. The right hand portion of the connector 54 isV turned .fdown'and V shouldered to turn freely inthe bear- :lng'4d` and to'prevent 'oblfftnable end playof the shaft in its bearings. Outside of its square er:-

vtively to partitions 8 and 2.

I' il? tension, the Shaft es is turned down to a diameter substantially equal to its dimension across its flat surfaces, and this cylindrical end portion 55 extends a substantial distance outside of the outer surface of the end wall I and is externally threaded. The outer end of the bearing M extends a small amount outside of the outer sur- 'face of the end wall l, and the outer end of the cylindrical portion of the connector 54 is substantally iiush with the outer end of the bearing 44. The connector 55 has a bore extending from its keyway 53 which closely fits the extension 55,

and outside of its cylindrical end, said connector is provided with opposite end keys 56 closely f1tting opposite keyways l in a full-stroke plate 58 mounted on the extension 55 (Fig. 29). Between the keyways 5l, the plate 58 is provided with a second pair of opposite keyways 59 fitting end keys 55 extending from the hub 36 of the handle 35. Fig. 28 is a left hand elevational view of the connector 54 removed from the shaft G3. In Fig. 25, the handle 35 is removed to more clearly show the keyways 59. Fig. 30 is a left hand elevational view of the handle hub 55 removed from the machine to more clearly show the end keys 5G.

The hub 35 is provided with a bore substantially larger in diameter than the extension 55, to receive with a sliding fit a tubular extension 6I from a knurled head 52. which extension 5i is internally threaded to engage the external threads on the extension 55. The head 52 is shouldered as indicated and when screwed onto the extension 55, holds the hub 35 tightly against the plate 58 and also holds the plate 58 tightly against the end of the connector 55.

In assembling the shaft 53 and its parts, the spacer 5l! is secured to the shaft by the pin 52, the spacers 5|, arms 46. and cams 41, i8 and 59 are placed on the shaft as indicated and described, and then the connector 55 is placed on the extension 55, and with the connector tightly pressed towards the spacer 50, a pin S3 is inserted through the connector and through the shaft end in the keyway 53, therebi7 rigidly securing the arms l5 and the cams to the shaft. The lower right hand corners of the partitions 2 to 8 inclusive are cut away (Fig. 4), so that the shaft A5 and its parts may be assembled as a unit and then as such be pla-ced in the bearings i.

M and 45.

As also shown in Fig. 14, the machine is provided with a second square shaft 64 parallel with and in front of the shaft L13, and having turned ends for support by bearings 55 and 65 extending through and rigidly secured respec- Sector resetting arms 61 spaced from each other and located respectively in compartments I to VI inclusive, and provided with square holes that are a sliding fit on the shaft 5d, are mounted on said shaft, each in the right hand portion of the corresponding compartment, and said shaft also carries in the same manner, an operating arm 'B8 cooperating with the cam 49 (Fig. 4). The arms 61 and 65 are held in spaced relation by square tubular spacers 59 that are a sliding fit on the shaft 65. The right hand resetting arm 51 is held against movement to the right by a pin 10 extending through the shaft 65 and against which pin said arm rests, and the arms and spacers are held in a tightly pressed condition against each other, by a pin 'll extending through the left hand spacer and also through the shaft 64. The lower portions of the partitions 3 to l inclusive are providedwith clearance slots (Fig. 4), so the shaft E4 and its parts may first be assembled as a unit and then as such be placed in the bearings B5 and 65.

Fig. 15 illustrates the assembly o f totalizer wheels 25 and ratchet wheels 2l', and transfer gears 22 on shaft Z3, and also the clutch mechanism controlling the operation of the totalizer wheels by the transfer gears. Each totalizer wheel 25 and attached ratchet wheel 2l combination is mounted on a bushing 12 which is a sliding t on the shaft 23. The shaft 23 also carries in the same compartment containing the totalizer wheel and ratchet wheel combination, a thin walled, tubular spacer 13 extending with a free fit axially, from the bushing 'l2 to the right hand partition of said compartment, to hold the totalizer wheel adjacent the left hand partition of said compartment. The transfer gear 22 in said compartment, is mounted on a grooved hub le having a bore that is a sliding fit on the spacer 13, said hub having a length axially permitting sufficient axial movement of the hub to the left on the spacer 73, to move a clutch pin l5 carried by the transfer gear, into one of the holes l5 in the web of the ratchet wheel 2l with which said pin 15 may be in alignment, said ratchet Wheel thereby comprising the other member of the clutch mechanism. With the clutch members thus engaging each other, the totalizer wheel and ratchet wheel combination and the transfer gear are positively connected and must rotate as a unit, if rotary movement is imparted to any one of the parts of said unit, and there is no possibility of angular movement in either direction of any one of said parts relatively to any other one of the parts of said unit, and the extent of angular movement of any part of said unit cannot be diierent from the extent of angular movement of any other part of said unit. Axial movement of the hub lll to the right on the spacer i3, removes the clutch pin l5 from engagement with the ratchet wheel 2l, and at the same time provides a suicient clearance space between said pin 'l5 and said ratchet wheel to prevent accidental contact of the Clutch pin with the ratchet wheel; 'for this open condition of the clutch mechanism, either the transfer gear 22 or the totalizer wheel and ratchet combination may be freely rotated independently of the other, with no possibility of communicating rotary movement of any kind or amount to the other.

As shown in Fig. 15, the right hand end of the shaft 23 has rigidly secured to it between the end plate l and the partition 2 by a pin 18, a iianged control member 79 for the resetting operation of the totalizer wheels 2B, which control member has a hub 8l! extending through the end plate l and has a stepped end tting the stepped inner end of a hub 8l extending from the resetting knob 36 with a sliding iit on the end portion of the shaft 23. A screw 82 threaded into the end of the shaft 23 holds the inner end of the hub Si tightly against the hub 8B, whereby resetting movement may be imparted to the shaft 23 by turning the knob 3, the knob 3d being readily removable from the shaft 23 for assembling and removing the casing 29, by removing the screw 82. rlhe shaft 23 is provided with a small longitudinal keyway 83 extending through all of the totalizer wheels 2E! to effect a resetting operation of said totalizer -wheels by rotation of the knob 3H.

As shown in Fig. 15, the groove in each of the :hubs l'715,1 visie'ngaged'lbyl the forward-end of a clutch operating plate 84 mounted at its 'rear 'portion Ionafsquare shaft 85 parallel with the shaft '23 and having turned endportions engag- 'ingwith a sliding' fit, bearings '86 'and 8l rigidly supported by end wall 9 and 'partition 2 respectively. The' plates :84' are provided with square holes-:that lare 'sliding fits on the lshaft 85, `and "said-platesvare held each in a similar position in the right l'i'and portion of the compartment containing Jit, by square tubular spacers 83 on 'the' Vshaft Y .between said plates, which .spacers `and plates are held in a tightly'pressed condition against -each other 'by pins E9 'extending y.through -s'aidfshaf ytl'iefeby rigidlyeholding said Y plates in parallel spaced relation extending in "thefrsameldirection from the shaft. YVA. guide A`rod Sil'extends with a sliding fitv through the plat'es''fland' also through the partitions 2 vto "B'Jinclus'ife but not through the end Vplatesi "and'9,`the ends' of said rod being adjacent the linn'erfsurfaces of said' end plates to hold 'the rod vrini place without the use of fastening-devices of any kind, which vsimpli'es and cheapens the construction andalso the assembly of the parts. The *guide rod '96 prevents angular movement of the -plates`84 `and shaft '85 around the'axis of said 'fsh'aftg butpermits free movement of said plates an'dshaft asa unit, axially of said shaft, which axial movement Ais employed to simultaneously move the' rclutch pins 15 to their 'closed or clutching positions inthe holesl 1B, which movement is limited lby engagement of the transfer gears 22 with thefratchet'wh'eels'2l, andto simultaneously clutched positions 'free from the'holes "l5, which 'movement is limited by engagement of the hubs 74 with 'thepa'rtitions 2 to 'i inclusive. The shaft washerV 92 being carried by the shaft adjacent 'saidshoulden' and between said Washer and the bearing 86,1 a compression spring is mounted "around the shaft, which spring is of such Ystrength "as to positively move the shaft 85 to the right to its extreme unclutching position when the pin Si is free from actuating force moving said shaft to -theleft to its clutching position. A clearance f opening I2! isprovided through each of the parti' tions 3 tol inclusive around the shaft B5, rper-- --mitting the mountingof 'said shaft in vits bear- 'ings'i andA B'Lafter assembling the plates 3ft on said shaft as (described.

The totalizer ywheels 2o are preferably cons structedas shown in enlargedscale views in Figs. v 16 to2() inclusive. a vunitary rim, web and hub structureof molded -material, for example, metallic alloy vor plastic,

Each of said wheels includes havinga 'bore tting the outercylindrical surface of Cka metallic `bushing 12,'said hub having in its right hand end'a circular recess S having a flat upper surface (Fig. 18) which recessa flange "95 of 'similar form and size on the bushing 'l2 (Fig. 19), fits when the parts are assembled as shown 'in Fig. '16. The ratchet Wheel 2| is of 'formed' sheet metal having a Webprovided with v-a Abore fitting the end portion of the bushing 12 ju'st outside of the-flange 95,*so that the `ratchet iwheel webiand the bushing flangeengage each' other for the" assembled condition-of `the wheel.

teeth, equal in number tothe number of' indicating `digits carried bythe rim ofthetotalizerwheel, for example ten teethyth'ere'being t'en equally spaced .indicating digits' vshown herein ascarried by Avsaid rim, "although obviouslyfa. multiple 'of that number may be employed if preferredj- .sa-id teeth .extend perpendicularly fromvtheff'ratchet Wheel web towards the'web ofthe totalizerwheel, and' at their left handfends extend vinto Vshallow seats 96 therefore (Fig. 18), to aord'lstable support for saidteeth ends when the parts' are 'assembled as showninFig. `16. The vratchet"-Wltfeel web is 'provided' with equally spaced :clutchholes 76 .in a circulararrangementhaving'thefsame radius as the4 radial vdistance of 'the' aXs'of the clutch pins I5 "(Fig.` 15) -ifrom'the "axis fofthe shaft 23, said holes being the sa'me in 'number as the number of indicating digits 'carried byzthe rim of the totalizer wheel, for example, ten'of said holes (Fig. .17), for the .llustrative's'tructure shown in the drawings. Said holes-'"areeach of slightly larger diameter than thediameter'of the clutch pins 'l5 cooperating therewith, and the outer ends of said vpins-fare preferably rounded or chamfered to insure certain'and easy entrance of said clutch'pins intofany of said :holes with which they may be in alignment, duringV any clutching operation.

The inner wall of the web of the tctalizer Wheel 23 has resting against it and supports a, metal disk ST which is circular exceptingforl a cut-out portion Sla (Fig. 20). Said'disk has a bore fitting the vbushing 'l2 and has an external `diameter slightly smaller than the inside diameter'ofthe rim of the totalizerwheel. Said disk 91 has pvotally secured thereto vat 9B, ya smallpa'wl .99having a pointed inner end projecting into the bore in the disk and through a slot rlill) therefor inthe bushing l2 and into'the bore insaid bushing, under the action of a-tension-spring HH connecting the pawl-With'fa lug |02 projectingfrom-the disk, excepting when the inner end of -said ypavvl is prevented from projecting into the bore in the bushing i2 by the shaft-23 in-'said bushing. The totalizer wheel 2B, ratchet wheel 21,'bushing 'l2 and disk 97 are held securely together inv-the assembled condition shown Ain Figs. `16 and 17 by rivets H33 extending through. said parts. As a result of the structurev described, with the structure of Figs. 16 and 17 mounted onv theshaft'23, and viewing the structure from the left hand end of said shaft, the counterclockwise rotation of the totalizer wheelsy requiredin totaling several 'item5 is freely permitted without angular 'movement' of the shaft Z, whereas When it is desiredvto'r'eset the totalizer wheels to `their 0 condition, counterclockwise rotation of the shaft 23 lin the manner below described, engagesthe paWlsSS in the leyw'ay 33 in the shaft 23 and rotatesallr of the totalizer wheels not in their 0 condition, until they reach that condition. The cutout flortion of the disk 91 is provided'witha formed cam 234i extending perpendicularly therefrom to initiate carry-over operations asbelow described.

As shown in Figs. 11 and 12the' clutch pin A'15 is preferably a sliding fit inA ahole thereforinthe transfer gear 22 and at itsinner end isrig'idly 'secured to the midportion of a hat arcuatespr'ix'g E65 held under tension against'the'gear- 2 2 by rivets E65 through the ends'of'said Spring. AThe spring holds the clutchv pin 1,5 irrthe position shownfin'Fig. l2, `unle`ss b'y accidentsaidpin'is Ypins ||8 holding it in place.

not yin alignment with one of the clutch-holes 76 'in the ratchet wheel 2| (Fig. 13) when the transfer gear 22 is moved towards the ratchet wheel during a clutching operation, in which case the spring will yield and prevent damage te the `parts that might otherwise occur.

In Figs. 33 to 35 inclusive, a modified construction of the clutching devices is shown, in which the clutch pin is carried by the ratchet wheel and the clutch holes are in the transfer gear, the construction being the reverse of that above de scribed in connection with Fig. 15, but operating vin an equivalent manner to produce the same results. In this modified construction, the totalizer wheel 2d is of the same construction and operates in the same manner above described, and the .ratchet wheel Zia is of the same form as and is --secured to the totalizer wheel 2Q in the same manner as above described, but in this case the ratchet wheel carries a clutch pin 75a extending through the web of the ratchet wheel with a sliding fit and secured thereto by an arcuate flat spring H1511 having its ends riveted to the web of the ratchet wheel at I bea. In this modified construction, the transfer gear 22a is provided with l-a circular row of equally spaced clutch holes ida 'The upper portion of the bar |08 is held adjacent the partition by a shouldered screw i 29, the lower portion of said bar being held in that position by being located in a small clearance Space provided between the partition and the cam il? (Fig. 14). Transverse movement of the upper portion of the bar |68 on the partition is prevented by a longitudinal slot Hb in said bar containing the body portion of the screw |39 with Ia sliding t, and transverse movement of the lower portion of Said bar is prevented by a roller III carried by said bar entering with a free rolling t, a slot H2 in the partition 8 parallel with the slot H2. rThe parts described are so related that the Central line of the bar |88 extends substantially through 'means-of the @hitch shaft se, and that the par is capable of only longitudinal movement towards `and from said shaft 85, a spring iid being provided having its upper end anchored in the partition 8 and encircling -a lug I Ill formed from the partition, and pressing at its lower end against a bentlug IIE formed from the bar |93, to at all times rmly hold the roller It? against the cam 47. At its upper end, the bar |83 is provided with parallel flange members IIb` extending perpendicularly and outwardly from said bar, through which a short pivot rod Hl extends, having end The pivot rod extends through parallel ears IIB extending outside of and adjacent the flange members IIS, which ears are formed from a lifting cam |25 having a body portion |22 parallel with and substantially spaced from the partition S, and an inclined outer end portion |23 extending towards f and terminating at its end closely adjacent to the partition 8. VA spring It@ around the pivot rod holds the outer end of the cam i2@ adjacent the partition 8 unless said cam is moved away Vi6 fromsaid partition against the action of said spring.

The inclined end portion |23 of the lifting cam is centrally slotted at |24, the width of said slot being sufcient to freely receive thecylindrical portion of the shaft Aadjacent the pin 9|, but substantially less than the over-all length of said pin 9|. The slot |24 extends a short distance into the body portion |22 of the cam |253, where it opens into a cross slot |25 in said body portion that has a width greater than the diameter of the pin 9i, and a length substantially greater than the over-all length of said pin 9|. The pin 9| extends through the shaft 85 in a direction crossing the slot I2@ perpendicularly, and parallel with the cross slot |25, v

As more fully explained below, the clutching operation between the clutch pins and holes therefor, must occur during the rst part of the forward stroke of each operating cycle of the handle 35. Each forward stroke of said handle is substantially degrees of movement, as is each back stroke, and as below described, full stroke mechanism is provided requiring the handle to be moved from its back position or position of rest, through its complete forward stroke before its back stroke can be begun, and then requiring it to be moved through its complete back stroke to its back position or position of rest thereby completing a cycle of operation, where a yielding spring holds the handle -against accidental forward movement, without interfering with the next cycle of operating movement of the handle, when the same is desired. Y v

As shown in Fig. 7, when a cycle of forward movement of the handle 35 is begun, the cam 41 begins its rotary movement in the direction of the arrow, and begins the movement of the bar |68 towards the shaft 85 by the rising surface |25 on said cam. At the start, the lifting cam |26 has the relation to the shaft 85 and pin 9| shown in Fig. 8 and the pin 15 and ratchet wheel 2| are in their unclutched position. Rotation of the cam 4'! moves the bar |98 in the direction of the arrow (Fig. 8), until the end of the rising surface |26 is under the roller II?? (Fig. 7), at which time the inclined portion |23 of the lifting cam |293 has passed completely under the pin 9|, moving the shaft 85 axially against the action of its returning spring 93 to its position effecting complete clutching between the' transfer gear 22 and the ratchet wheel 2|, and at the same time placing the pin 9| on the body portion |22 of the lifting cam, but with the lifting cam not sufdciently moved under the pin BI to bring the latter into alignment with the cross slot |25 (Fig. 9). This relation of the parts, effected by the rising surface I 25 of the cam 41 and shown in Fig. 9, is continued for a substantial angular movement of the cam il by a delay surface |27 thereof, to permit other operations below described, to be effected by rotary movement of the shaft 43 during the delay interval. The movement of the shaft 35 from its position shown in Fig. 8 to its position shown in Fig. 9, is effected 'by substantially the rst 3b degrees of forward movement of rthe handle 35 from its back position, and the delay interval represented by the delay surface |27 of the cam lil, comprises substantially the next 60 degrees of forward movement of the handle 35. At the end of the delay surface |21 of the cam 37, a second rising surface 22 of said cam engages the roller |01 and in substantially 5 degrees of angular movement of said cam, moves the lifting cam |28 enough further under the pin 17 3| to bring said l'pin into alignment with the cross slot |25, and the spring 93 at once moves the shaft 85 and parts carried thereby 'to their unclutched position shown in Fig. 8, at which time, however, the lifting cam is still in its position of maximum forward movement, which condition is continued until the end of the forward stroke of the handle'35, by a second delay surface |23 of the cam 4?.

The following back stroke of the handle 35 produces an operation of the bar |08 that is the reverse of that described for the forward stroke, but inasmuch as it is desired that the back stroke shall have no effect on the clutching mechanism described, that result is secured as follows. The lifting cam |23 is held with its outer end adjacent the partition 8, by a spring |3. At the beginning of the back movement'of the bar |33 by its spring H3, the pin 9| is between the lifting cam |23 and the partition 8. As the bar |38 moves backward as indicated by the arrow in Fig. lo, the inclined end portion |23 of 'the lifting cam l2@ eng-ages the pin 3| and is lifted thereby against the action of the spring as indicated in 10, and for continued back movement of the bar 833, the lifting vcam |28 is freed from the pin 9i, and the spring |30 moves the outer end of the lifting cam to a position adjacent the partition t ready for its next vforward movement.

In Fig. 4, the sector set-up mechanism is shown in the lower portion of said iigure together with the sector resetting and transfer mechanism lo cated in compartment I, and in the upper part of said gure the carry-over mechanism located in compartment II is illustrated.

As shown in Fig. 4, a sheet metal sector |3i is mounted for rotation on a rod |32, which extends with a sliding fit through partitions 2 to 3 inclusive but not through the end plates and 9, in the saine manner above described for the guide rod 3G. As shown in Fig. 32, th'e'sector |3| is rigidly mounted on a bushing |33 having extensions ending adjacent the partitions 2 and 3, by which the sector is maintained in the position indicated in Fig. 32, between said partitions, which bushing is a sliding nt on the rod |32. The upper circular edgeof the sector is closely adjacent a corresponding index plate 25 not shown in Fig. a, and is provided with gear teeth |34 meshing with the'te'ethof a pinion |35 mounted for free rotation on a rod |36, which pinion is also in mesh with a corresponding transfer gear 22. The rod i 36 extends with a sliding fit through partitions 2 to 8 inclusive, but not through the end plates and 3, in the manner above described lfor the rod 93. The pinion is maintained 1n the position in compartment I shown in Fig. '32, by tubular spacers |31 on said rod, for which position the right hand end of the pinion is substantially in line with the right hand face of the sector |3| and also with the right hand face of the transfer gear 22 when the latter is in its extreme unclutching position shown in Fig. 32. The pinion |35 has an axial length maintaining it in mesh with the transfer gear 22 when the latter is moved to its extreme clutching position shown in Fig. 9.

As shown in Fig. 4, the finger 24 is provided with an angular offset 24a in line with the teeth i355, secured to and forming a support for the arcuate indicator strip 32, and further support for the latter is provided by an langle member 533 secured to the sector 13| and also secured to Said strip 32. Y n Y As shown in Fig.` 4, the lower portion of the Lic sector |3| Yhas acircular edge of smaller radius than the teeth |34, provided with V-shaped notches i355 for cooperation with a spring detent Mc rigidly secured to a supporting bar Uil, to yieldingly hold the sector in any position it may be given in making a set-up by movement of the finger 24, the angular spacing of the notches E39 being the same as the angular spacing of the digits on the indicator strip 32 and also proportional to the angular spacing of the digits on the totalizer wheel 20 (Fig. 32) and of the clutch holes "i3 in the ratchet wheel 2|. The sector and pinion construction described is duplicated in each of the compartments II to VI inclusive, and the bar |4| extends through all of said compartments and is supported for a small amount of angular movement on a rod |42 extending 'with a sliding nt through partitions 2 to 3 inclusive in the manner described for the rod et. The bar lai is provided with spaced ears |43 adjacent desired ones of the partions, which ears are provided with holes receiving the rod H2 with a sliding nt, and springs |44 are provided between the right hand edge of said bar lill and desired ones of said partitions to press the detents |43 against the sectors with sumcient force to insure holding the sectors effectively in positions given them in making any set-up of the ngers 24.

As shown in Figs. 3 and 21 each ratchet wheel 2| cooperates with a spring actuated detent |45 of formed sheet metal, mounted with a sliding nt on a supporting rod |26 extending with a sliding nt through holes therefor in partitions 3 to 3 inclusive in the manner above described for the rod 90, excepting that the rod |43 has its ends adjacent partition 2 and end plate 3,. Each detent is held in position in its compartment by a formed spacing lug li extending to the right from the detent and ending adjacent the partition between it and the next compartment, and a spring |48 is provided holding each detent M5 yieldingly but firmly against the corresponding ratchet wheel 2|.

It will be observed that during movement of the fingers 24 to effect a desired keyboard set-up, there is no operating engagement of any kind between the transfer gears 22 and the totaiizer wheels 2|] because of the open condition of the clutching devices; thus the transfer gears may be rotated to suit the operator by movement of the fingers 24 in either direction, and the setting of the fingers is accurately indicated by the digits onv the indicator strips 32 that appear through the sight openings 3| in the index plates 23 (Fig. 2). Furthermore, in effecting said keyboard setup, the clutch pins '15 carried by the transfer gears 22, are obliged to move angularly to an extent having a fixed ratio to the angular movement of the fingers 2G, because of the sectors isl being positiveiygeared to the transfer gears 22 at all times, as a result of which when any 1seyboard set-up has beencompleted, each cutch pin l5 definitely and positively must have an angular position relativelyto its O position, and be spaced therefrom the same number of angular units (each of which is 36 in the illustrative machine of the drawings), as represented called for by the digit appearing in the corresponding sight opening 3 i. The parts are so proportioned and adjusted, that for each holding position of each ratchet wheel 2i by detent |43, one of the digits on the attached totalizer wheel 23 is centered in the corresponding sight opening s3 inthe casing 2e; thatror each hoising position of each sector ISI by its detent itt,

one of the digits on the attached indicator strip 32 is centered in the corresponding sight opening 3| in the corresponding index plate 25, and that for each of said holding positions of each ratchet wheel and each sector cooperating therewith, the clutch pin l5 associated with said sector is in axial alignment with one of the clutch holes i6 in the cooperating ratchet wheel.

. When a keyboard Set-up has been effected as above described, the handle 35 is moved through its cycle of operation, and with it the main operating shaft 43. As shown in Fig. 4, the cam 49 has resting against it under the action of a spring |45, a roller |55 carried by the operating arm B8 on the sector resetting shaft 54. One of the resetting arms 5'5 is connected with one end of the spring |59, the other end of which spring engages the tie rod ill. Each resetting arm 5l extends to the left from the shaft 55 over and in line with a roller stud |5| carried by the sector |3i, which stud |5| is angularly spaced from the arm 5l so that when the sector is moved to its 9 position, said stud |55 is close to but slightly spaced from the arm 57|. The rst part of the surface of the cam 49 engaging the roller |50, is a delay surface 52, of about 45 degrees in eX- tent, during which interval there is no movement of the arm 5l, but by which an ample interval is provided so that somewhat less than that amount of forward movement of the handle 35, completes the movement of the transfer gears 22 axially into engagement with the ratchet wheels 2| and establishes the clutched relation between said transfer gears and said ratchet wheels in the manner above described in connection with Figs. 7 to 10 inclusive. Thus at the end of the delay interval |52 of the cam 55, the transfer gears 22 are securely clutched and locked against rotation relatively to the ratchet wheels 2| and attached totalizer wheels 25, which clutching occurs entirely by axial movement of the transfer gears 22 and this produces no tendency of any kind to displace the set-up sectors |3| from the positions in which they are held by the detents |55, or to displace the totalizer wheels 2 and ratchet wheels 2| from the positions in which they are then held by the detents |45. Following the delay surface |52, the cam 59 is provided with a rising surface |53 of about 45 degrees in extent and of sufficient rise to move the arm 5l through an angle that will move the sector lsl from whatever its set-up position may be, back to its position shown in Fig. 4, if the sector were moved from said position to eifect the set-up. Because of the clutched condition referred to, of all of the transfer gears with the corresponding ratchet wheels, the resetting of the sectors 3| to their 0 position positively rotates or advances the totalizer wheels 25, each by the number of units or the set-up of the co1'- responding sector.

A stop rod |55 extends through partitions 2 to 5 inclusive with a sliding t and also through a clearance opening |5411 therefor in the sector i3d, said opening |55a having an angular extend such that one of its edges engages said rod when the sector is moved to its 9 position, and that an opposite edge of said opening engages said rod when the sector is moved back to its 0 position, said rod |54 being held in place as above described for the rod 95. Following the rise |53, the cam 59 is provided with a second delay surface |55 permitting continued movement of the handle 35 to the end of its forward stroke without further movement of the shaft 64 and arms 6l. During the back stroke of the handle 35, th'e spring |59 raises the arms 61V to their original position of rest without movement of any kind of the sectors IBI, freeing said sectors for the next keyboard set-up operation as far as the arms 61 are concerned. f

A stop rod |56 limiting movement of the cam 59 and shaft 43 in each direction, extends with a sliding nt through partitions 2 to 8 inclusive and is held in place as described for the rod 95. After the transfer operation of the set-up amount from the sectors |3| to the totalizer wheels 20 effected by returning the sectors |3| to their 0 positions by the rise |53 of the cam 59, and while the arms 67 are still in their positions holding the sectors |31 in their 0 positions by the action of the delay surface |55, when about5 of said delay surface has passed under the roller |55,

vthe second rise |28 of the cam il has moved the bar |58 sufficiently to release the pin 9| from the lifting cam. |25, thus insuring that the sectors |3| shall be fully returned to their 0 positions before the clutching mechanism between the transfer gears 22 and the ratchet wheels 2| is released and the transfer gears 22 are moved to their positions indicated in Fig. 8.

It will be observed that during the resetting of the sectors |3| to their-0 positions, conditions may readily develop where all of the sectors must be simultaneously reset against theresistance of all of the sector detents |45 and all of the totalizer detents |45, thereby placing a heavy load on lthe handle 35, unless means are provided to decrease that load. In view of the transfer gears 22 being positively clutched to the ratchet wheels 2| during the resetting ofthesectors |31, the totalizer'detents |45 can be relied upon during that interval to not only prevent accidental displacement of the totalizer wheels V2t, but also of the sectors |3|, thus permitting substantially decreasing the handle load represented by the sector detents Ml), as illustrated in Figs. 5 and 6.

As shown in Fig. 5, the cam 55 in the compartment III has resting against it a roller |51 carried by the right hand end of a horizontally disposed flat bar |53 pivotally connected at its left hand end at |59 with-the mid-portion of a lever l5 pivotally connected at its Yupper end at IGI with the partition 5 against which said bar |58 rests, being held flatwise against said partition in part by having its right hand and disposed between the cam 58 and said partition, and in part by its pivotal connection |59. The right hand portion of the bar is restrained against appreciable vertical movement by a roller E2 carried by said bar, engaging with a rolling t a horizontal slot |63 in the partition 5. Theilever |60 is disposed vertically above the right hand end of the sector detent |45 in compartment III, and has pivotally connected with its lower end at |55, a pawl |55 engaging a ratchet .wheel |55 pivotally mounted by means of a stud |57, onV the partitionV 5, the lower edge of said ratchet wheel |55 resting against the upper surface of the right hand edge of the bar |4| supporting all of the sector detents |40, to restrain upper movement of said right hand edge under the action of the spring or springs |44. The teeth of the ratchet wheel |65 are suiiiciently large anddeep, and the parts are so proportioned and positioned that when said right hand edge is between two adjacent ones of said teeth and resting against the bottom of the notch between them as shown in Fig. 5, said right hand edge is held in its uppermost position by the spring or springs |44, which have a strength sufficiently greater than all of the 'spring rdetents |40 to maintain that position of said right hand edge against the operation of any or all of said spring detents. When the ratchet wheel |66 is rotated a little less than the pitch of said teeth, so that the point of the following tooth rests on the upper surface of said right hand edge portion, the bar lili is tilted on its supporting rod |42 around to the right a sufficient amount against the action of the spring or springs |44, to nearly or quite relieve the sector 3| of the holding action of the spring detent |40 as shown in Fig. 6. Avspring |88 between the pawl |85 and the bar |58 holds the pawl in engagement with the ratchet wheel |58, and a spring |89 coiled around a post extending from the partition 5, and with its upper end anchored in an 'opening in said partition and resting at its lower end against a bent lug 1| formed from the bar |58, holds the roller |51 firmly against the cam 48.

The first part of the operating'surface of the cam 48 is a. delay surface |12 of about 15 degrees in extent. This holds the bar |58 and 'ratchet wheel |53 in the positions shown in Fig. 5, and during the interval the cam 41 has sumciently moved the shaft 85 so that there is substantial clutching engagement between the clutch pins and the ratchet wheels 2| and control against accidental movement of the sectors |3| has been lestablished by the pawls |45, before any weakening of the applied pressure of the spring detents |48 takes place; the delay interval |12 of the cam 48 is followed by a rise |13 of about 3f) degrees of angular extent, that moves the bar |4| from the position shown in Fig. 5 to the position shown in Fig. 6, thereby nearly or quite freeing the sectors |3| from restraint lby the detents |48 as above described, the clutching operation between the pins 15 and ratchet wheels 2| being completed during the first part of said rise, and the movement of the detents |46 to the positions indicated in Fig. 6 being completed at the end of said rise |13; following the rise |13, the cam 48 is provided with a second delay surface |14 of substantially 45 degrees in extent, holding the detents |48 in the position shown in Fig. 6 during the entire Vresetting movement of the sectors I3! above described as effected by the arms S1, during which entire resetting movement of the arms 81, the pins 15 and ratchet wheels r2| are held in maximum clutching engagement as above described; the second delay surface |14 of the cam 48 is followed by a second rise |15 of substantially 5 degrees in extent, which as above described, effects the movement of the ratchet wheel i 56, bar ilii and detents |48 from the positions shown in Fig. 6 to the positions shown in Fig. '5; the second rise |15 of thelcam 48 is followed by a third delay surface |16 to complete the forward movement of the cam 48.

It will be noted that the back rotation of the cam 41 by the back: stroke of the handle 35, produces no movement whatever of the shaft 85 from its previously established unclutching position, serving only to effect the movement of the bar |88 to its initial position by the action of the spring H3; that the baci: rotation of the cam 45 produces no effect whatever on the detents iii, serving only to eect the movement of the bar 53 to its initial position by the action of the spring its, thereby moving the pawl |65 te a new position of operative engagement with the ratchet wheel |85, the latter` being held against back rotation by the bar ylili then serving asv a holding pawl for said ratchet wheel;

and that the back rotationfo'f 'thecam 49 pro duces no effect whatever on the sectors |3I, excepting to free them for effecting the next key board set up, said back rotation serving only to raise the arms 81 to their initial positions away from the studs 55|, by the action of the spring |49.

As shown in Fig. 3l, the full stroke plate 53 (Figs. 3 and 14), is provided with an upper circular edge having closely spaced shallow notches i'i'i therein to engage a spring actuated pawl |18 pivctally supported on a stud |18 extending outwardly from the end plate The plate 58 is shown with its upper portion in its rear or initial position, further rearward movement thereof being prevented by the engagement of a radial edge itil of the plate 58 with the stop rod |55, for ywhich rod a recess is provided in said plate so that an opposite radial edge lSl, 'of said plate 53 engages said rod -atthe end of the forward stroke of the operating handle 35. The upper end ofthe pawl |18 is connected by a spring i332 with a stud |83 extending from the plate i, so that when said pawl is free from the notched circular edge -of the plate 58, said pawl is held in a radial line through the axis of rotation of said platey by the tension of said spring. The pawl ii'ii is mounted on the end plate so that its inner end is somewhat nearer the axis o1' rotation ofthe plate'58 than are the notches il?, and said inner end is 4provided with two spacer1 holding edges |84 and |85. As a result oi' the construction described, when the handle 35 is moved through the forward stroke of its operating cycle, the pawl |18 is swung to an inclined position with its vback edge |84 in engagement with the notches |11, thereby permitting only forward Vmovement of the handle 35 until the rear edge of the-notched portion -reaches the pawl. The notched portion rof the plate 58 is of somewhat smaller angular extent than the anguiar spacing of the edges |88 and |8| from each other, as a result of'which when, at the end of the forward stroke of the handle 35, the edge lSi engages the stop rod |58, the pawl |18 clears the rear edge of the notched portion of the plate 58 and moves to its 'radial position permitting the back. stroke of the handle 35 to begin, which inclines the pawl in an opposite direction to its first inclination and engages the edge |85 with the notches VVE, thereby permitting only back movement of the handle 35 until the edge ist engages the stop rod l 55,'which places the handle 35 in its back position of rest and-clears the pawl |18 for movement to its radial position ready for the next cycle of operation. A spring 38 around the connector 54 (Fig. 3), and having its ends engaging the cam 49 and partition 2, moves the shaft 43 and handle 35 through their back rotation and stroke, the strength of said spring being suhicient 'to positively overcome any forces of resistance to said back rotation and stroke that may be exerted on said shaft by the parts of the machine.

The carry-overmechanism of the machine is shown in Figs. 3, 4 and 21 to 26 inclusive, which mechanism includes in each of the compartments II to VI inclusive an operating slide 28, a trigger latch 2| and a timing latch 28, and in addition, asiide resetting lever |81 (Fig. 4), for moving the associated slide 28 to its extreme rear position at the beginning of each cycle of operation of the handle 35.

As shown in the upper part of Fig. Y4, for the carry-over mechanism uin compartment II, the slide 28fis supported in la nearly horizontal lposi- 23: tion by front andrear parallel rods |88 and |89 each extending with a sliding fit through partitions 3 to 8 inclusive and held in place as above described for the rod |48. Each of the slides 26 is preferably of sheet metal formed into a U-shape opening upwardly with the legs of the U parallel and forming the side walls of the slide. which are provided with slots |98 and [9i receiving the rods |88 and ISS with a sliding nt and thereby affording stable support for the slide. The slots i90 and ISI are of a length permitting the maximum required longitudinal movement of the slide, and one or both of the rods |88 and |89 engage the rear ends of their said slots when the slide is moved to its extreme forward position, thereby limiting said forward movement of the slide. A spring |92 extends in the slide 25 from the rod |88 to the rear portion of the slide where it is attached to said slide to move the slide forwardly when it is released from the holding engagement of the latches 2l and 28. The front end of the slide has pivotally connected therewith at |53, a spring actuated pawl |913 in line with the lower teeth of the corresponding ratchet wheel 2i and so related to said teeth that when the slide 26 is released for a carry-over operation, the spring |92 will move the pawl a sufficient distance forwardly to advance the totalizer wheel 2 attached to the ratchet wheel 2|, one unit, which for the illustrative structure is 36 degrees, in which position the slide is held by the spring |912 until the slide is moved to its reset or rear position as follows: the resetting lever I8? is preferably formed from sheet metal to have a U-shaped mounting portion through the parallel side walls of which a supporting rod. |95 extends with a sliding nt, which rod also extends with asliding t through the partitions 3 to 8 inclusive and is retained therein in the manner described above for the rod |55. One side wall of the supporting portion of the lever |81 is extended upwardly and adjacent a side wall of the slide 26 where it is longitudinally slotted at |9' to receive with a sliding iit the projecting end portion of a stud IS? extending through and rigidly secured to the side walls or the slide. Said side wall of the lever i8? is also extended below its mounting portion and has pivotally connected therewith at 98 a spring actuated pawl iQQ in the path of movement or" the bent end portion fida of the arm l5 when the latter is moved by operation of the handle 35. The arm 46 is adjacent a downwardly extending setting arm 28a of the timing latch 28 in the path of movement of a lug 46h extending laterally from the arm d and so related angularly to the arm 28a that the last 10 degrees of each back stroke of the handle 35 will move the latch to its slide-releasing position shown in Fig. 4 against the action of a spring 28h, and that the first 10 degrees of each forward stroke of the handle 35 will fully release the latch 28 so that its spring 28h may move it into its slide-holding position shown in Figs. 21 and 22 and hold it in that position until the last 10 degrees of the next back stroke of the handle 35. rThe bent end 46a of the arm 126 when in its extreme back position is spaced about 10 degrees of angular movement back of the lower end `of the lever |81 with the slide 28 in its extreme forward position, and a' further forward movement of the arm 45 after releasing the latch 2S, of about 10 degrees is required to move the slide 26 to its extreme rear position ready for the next carry-over operation. This accomplishes three things: iirst, it delays the carryover4 operation in connection with each cycle of operation of the handle 35, until the last few degrees of each cycle and until after all other operations eiected by the handle 35 are cornpleted; second, it insures that the timing latch 28 shall be in a position to hold the slide 26 in its reset or rear position when by the resetting operation, the slide reaches that position; and third, it insures that the slide 25 shall reach its reset position well in advance of anything occurring in the cycle of operation of the handle 35, that could require any movement or conditioning o1 the slide incident to storing a carryover operation for release later in the same cycle of operation.

After the slide 28 is moved to its reset position by operation of the lever |87 as described, and the handle 35 has completed its forward stroke and is in its back stroke, when the bent end lita reaches the lower end of the lever 87, for reasons pointed out below, the point of the pawl ide is to a small extent in the path of said bent end, but return movement of said bent end continues without interruption or restraint, because of said paw] turning on its pivot |98 against the action of its spring until it clears the bent end dta, when it is returned by its spring to its operating position shown in Fig. 4.

The trigger latch 2i shown in Fig. 4 is preferably formed from sheet metal into a U-shaped structure opening downwardly and pivotally supported by a rod 2de extending with a sliding nt through its side walls and also through partitions 3 to 8 inclusive and held therein in the manner above described for the rod |45. The latch '2? is in part in a higher position than the slide 2S, but to one side of said slide, with the adjacent side walls of said latch and slide overlapping each other, the combined width of said latch and slide being a free nt between the partitions 3 and d, the latch being thereby held adjacent partition 3 and the slide being held adjacent partition l (Fig. 3) The lower portion of the side wall of the latch 27 adjacent the slide 25, is provided at its front end with a lug 29| extending for the lowermost position of said latch, into the path of movement of the slide 26, whereby for said lowermost position, said lug 25| engages the upper portion of the end of the adjacent side wall oi the slide with the slide in its rearmost or reset position, and holds the slide in that position against the action of the spring |92. The side wall of the latch 2l near the adjacent partition of the compartment is provided with a forwardly extending arm 292 having at its front end a laterally extending lug 2?;3 for raising the latch to release the slide from the lug Zi, in the manner below described. Figs. 21, 22 and 23 show the slide 26, the trigger latch 2l and the timing latch 28 in the compartment II, in their diierent positions of operation. In Fig. 2i, the slide 26 is in its rear or reset position, with the lug 23| in its position to prevent forward movement of the slide 25 and with a hook 28e on the timing latch 28 in an opening therefor in the bottom of the rear end portion of the slide, but with an appreciable clearance space between the hook and the rear edge of said opening. As shown in this figure, the slide resetting arm #it is moving forwardly but has not quite completed its slide resetting movement, which resetting movement has, however, progressed sufficiently so that the latch 2 under the action of its spring Zia, has moved downwardly to its position holding the slide 26 against forward movement. VThe remaining .small amount of forward movement of the arm 26 required to clear the arm from Vthe'resetting lever I8?, moves the slide 20 rearwardly a small amount from the position 'shown in Fig. 2l thereby providing a small clearance between the front end of the slide and the holding lug 294 on the latch 2, thereby permitting the latch to move quickly, freely and accurately to its slide holding position, even for rapid movement of the operating handle 35. When the arm 455 passed the lever the spring |02 moves the slide 22 to the position shown in Fig. 21 against the lug 201, and also extends the lower end of the lever i8? slightly into the path ofv return movement of the bent end. 42a of the arm d5, which in part accounts for providing the spring actuated pawl i953 on the lower end of the lever i'l, to permit free. return movement of the arm 4 and to' avoid the possibilityv of damage to the parts which might otherwise occur during said return movement. During the remainder of the cycle of operation oi the handle 35 after resetting the slide 2,2, the operation of the slide 25 is entirely controlled by the latches 27! and 28. It will be noted that in Fig. 21, the spring actuated pawl 94 is in a position spacing its iorward end a substantial distance to the reary of the lower teeth ol the ratchet wheel 2i attached to the totaliaer wheel it will also be noted that the spring actuated detent 125 is providedwith a wedgeshaped pointed end l4 5a having widely diverging sides, so that if any voperation of the ratchet wheel 2i moves one'of its teeth under and passed the pointed end i450., the detent spring idd will at once move the pointed end to a bottoming position between corresponding ones of said teeth and establish a centered relation ro :t one of the digits on the totalizer wheel 2)4 relatively to the corresponding sight opening 33 in the casing 2S.

Fig. 22 shows the parts illustrated in Fig. 21, in the relative positions they assume when the arm 222 is raised by movement of the totalizer wheel 20 of next lower order from its "9 to its position. The relation of the parts shown in Fig. 22, is maintained until just before the end of the cycle of operation of the handle, illustrated by Figs. 2l, 22 and 23.

For the position or" the parts shown in Fig. 22, the slide 26 has moved forward a small amount, until the hook 2de engages the rear edge of the slide', opening containing it, and for this position of the slide, the lug 2M now Vreleased from the lifting'mechanism of the totalizer wheel 2,0 of4V next lower order, has dropped and is resting upon an upper edge of the slide V2tv with the slide moved forwardly an amount suiiicient to prevent engagement between said lug and the front end of the slide. The pawl 04 is now forward a small amount from its position shown in Fig. 2l, but not enough so to engage the teeth of the ratchet wheel 2i. The lever lld is also moved a small amount around to the left on its supporting rod |95 which is a further reason for providing the lower endv of the lever with the spring actuated pawl iBS. The slide 2S is now under. the sole control of the timing latch 28, and

lremains so until just before the end of the cycle of operation of thev handle 35v under consideration.

In Fig. 23v the position of the parts is shown at the end of the cycle o operation of the handle rthe timing latch 23` is in its releasing position by engagement with the lug 46h and the slide` 25, is its, extreme forward position bythe action or" its spring 192. In moving to the position shown in Fig. 23, the pawl |94 has engaged the tooth of the ratchet wheel 2| shown in line with and in front of it in Figs. 21 and 22 and moved said tooth to the position shown in Fig. 23, thereby advancing the totalizer wheel 20 one unit,` and accomplishing the carry-over operation indicated to be necessary by the raising previously in the same cycle of operation, of the arm 202 by rotation of the totalizer wheel of next lower order from its 9 to its 0 position.

Any slide 26 moved to its position shown in Fig. 23A during any cycle of operation of the handle 35, remains in that position until the iirst part of the next cycle of operation of said handle, and during about the second 10 degrees of the forward stroke of said next cycle, all of the slides that are in their forward or carry-over positions, are reset and moved to their extreme rear positionsy shown in Fig. 21, by the operation of the bent ends 46a of the arms 4S carried by the main shaft 43. Each of compartments II to VI inclusive is provided with carry-over mechanism identical with thatl shown and described in connection with Figs. 21, 22 and 23, and having the same mode of operation.

In Figs. 24, 25 and 26, the means employed to operate one of the trigger latches 27, is shown. In order to avoid confusion as to the planes of sectioning shown in Fig. 3, the carry-over mechanism shown in Figs. 24, 25 and 26 is that located in compartment III., but with the same :force and effect as though the carry-over mechanism of compartment II were shown in said ng ures.

In Fig. 24, the lug 203 on the operating arm 202 of thetrigger latch 21, is shown extending into the path of cam I04-II through a clearance opening 204 in the adjacent partition 4 and resting on the lower edge of said opening, which is the lowermost position of the latch 21 and arm 282 and which determines the extent that the lug initially holding the slide 26 against forward movement, vertically overlaps the end of said slide. The cam I04-II of totalizer wheel 2li-II, is shown in the position it has when the 9 digit on the totalizer wheel 20-I is displayed in the corresponding sight opening 33 in the casing 29. When the totalizer wheel 20,-II is advanced to its 0 position, the cam iM-I is advanced to the position shown in Fig. 26 and during the advance of said cam, it raises the lug 2&3 to its uppermost position as shown in Fig. at the mid-position of said advance movement, and at the end of said advance movement the cam has passed under and cleared said lug, which permits ther arm 202 and latch 3? to drop to a lower position. rEhis accomplishes the release of the slide 26, and permits the small amount of forward movement'of. said slide described above in connection withY Fig. 22. It will be noted that the maximum lift of the lug 203 by the cam {D4-II as shown in Fig. 25, is greater than that required to move the lug 20! upwards to its slide releasing position, which permits the small initial for-ward movement of the slide 26 above described, to take place free from any holding or f rictional resistance of the latch 2l, and insures that when theA latch is freed from the cam 11M-II, it will drop on an upper edge of the slide 25, since said slide is free to move immediately and without restraint, when the holding lug 20| is lifted from engagement with it. It will also be noted that the same result is secured as above described whether the advance movement of the totalizer wheel 20-11 begins at its 9 position or at some 

